Fix downloads.
Fix downloads.

CenterForOpenScience/waterbutler,rafaeldelucena/waterbutler,felliott/waterbutler,icereval/waterbutler,hmoco/waterbutler,RCOSDP/waterbutler,Johnetordoff/waterbutler,kwierman/waterbutler,cosenal/waterbutler,rdhyee/waterbutler,Ghalko/waterbutler,chrisseto/waterbutler,TomBaxter/waterbutler